555005005056 has 144 divisors (see below), whose sum is σ = 1642426766400. Its totient is φ = 184868739072.

The previous prime is 555005005031. The next prime is 555005005109. The reversal of 555005005056 is 650500500555.

555005005056 is a `hidden beast` number, since 5 + 5 + 50 + 0 + 500 + 50 + 56 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 555005005056.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9835290 + ... + 9891558.

Almost surely, 2^555005005056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 555005005056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (821213383200).

555005005056 is an abundant number, since it is smaller than the sum of its proper divisors (1087421761344).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

555005005056 is a wasteful number, since it uses less digits than its factorization.

555005005056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57721 (or 57701 counting only the distinct ones).

The product of its (nonzero) digits is 93750, while the sum is 36.

The spelling of 555005005056 in words is "five hundred fifty-five billion, five million, five thousand, fifty-six".